C:\Docs\Projects\01. Lean SDMC>fossil commit
c:/Program Files/Vim/vim73/gvim.exe "C:/<snipped>/ci-comment-5
260D688DBC8.txt"
'c:/Program' is not recognized as an internal or external command,
operable program or batch file.
c:\Docs\Bin\fossil.exe: editor aborted

Diff below fixes this, but a better solution would probably be to extend the portable_system command to cover all uses of fossil_system

--- src/checkin.c
+++ src/checkin.c
@@ -442,11 +442,11 @@
 #if defined(_WIN32)
   blob_add_cr(&text);
 #endif
   blob_write_to_file(&text, zFile);
   if( zEditor ){
-    zCmd = mprintf("%s \"%s\"", zEditor, zFile);
+    zCmd = mprintf("\"%s\" \"%s\"", zEditor, zFile);
     printf("%s\n", zCmd);
     if( fossil_system(zCmd) ){
       fossil_panic("editor aborted");
     }
     blob_reset(&text);

drh added on 2011-02-04 03:28:14 UTC:
The diff above does not work. On the system on which I am typing this remark (a Mac) my editor is set to

fossil setting editor 'open -e -n -W'

In other words, the command is "open" and that command is getting three command-line arguments, -e, -n, and -W. If these are quoted, then the shell will think that I am trying to run a command named "open -e -n -W" which is the wrong thing to do.

If the editor setting contains a space, then the quotes should be included in the editor setting itself:

fossil setting editor '"c:/Program Files/Vim/vim73/gvim.exe"'

mjanssen added on 2011-02-04 11:32:41 UTC:
you are right. pebkac. as for completeness ' doesn't work you will need \"